168378520822 has 16 divisors (see below), whose sum is σ = 258615447552. Its totient is φ = 82176008040.

The previous prime is 168378520813. The next prime is 168378520829. The reversal of 168378520822 is 228025873861.

It is a self number, because there is not a number n which added to its sum of digits gives 168378520822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168378520829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530454 + ... + 786217.

It is an arithmetic number, because the mean of its divisors is an integer number (16163465472).

Almost surely, 2^168378520822 is an apocalyptic number.

168378520822 is a deficient number, since it is larger than the sum of its proper divisors (90236926730).

168378520822 is a wasteful number, since it uses less digits than its factorization.

168378520822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318203.

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 168378520822 in words is "one hundred sixty-eight billion, three hundred seventy-eight million, five hundred twenty thousand, eight hundred twenty-two".